155161101 has 8 divisors (see below), whose sum is σ = 207206784. Its totient is φ = 103278080.

The previous prime is 155161099. The next prime is 155161109. The reversal of 155161101 is 101161551.

It is a happy number.

155161101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155161101 - 2¹ = 155161099 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155161109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38421 + ... + 42266.

It is an arithmetic number, because the mean of its divisors is an integer number (25900848).

Almost surely, 2^155161101 is an apocalyptic number.

It is an amenable number.

155161101 is a deficient number, since it is larger than the sum of its proper divisors (52045683).

155161101 is an equidigital number, since it uses as much as digits as its factorization.

155161101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81331.

The product of its (nonzero) digits is 150, while the sum is 21.

The square root of 155161101 is about 12456.3678895575. The cubic root of 155161101 is about 537.3545751160.

The spelling of 155161101 in words is "one hundred fifty-five million, one hundred sixty-one thousand, one hundred one".